/* eslint-disable */
import "./index.less";
var NProgress = {};
var Settings = {
  minimum: 0.08,
  easing: 'linear',
  positionUsing: '',
  speed: 200,
  trickle: true,
  trickleSpeed: 200,
  barSelector: '[role="nprogress-bar"]',
  parent: 'body',
  template: '<div class="bar" role="nprogress-bar"><div class="peg"></div></div>'
};
/**
 * Updates configuration.
 *
 *     NProgress.configure({
 *       minimum: 0.1
 *     });
 */

NProgress.configure = function (options) {
  var key, value;

  for (key in options) {
    value = options[key];
    if (value !== undefined && options.hasOwnProperty(key)) Settings[key] = value;
  }

  return this;
};
/**
 * Last number.
 */


NProgress.status = null;
/**
 * Sets the progress bar status, where `n` is a number from `0.0` to `1.0`.
 *
 *     NProgress.set(0.4);
 *     NProgress.set(1.0);
 */

NProgress.set = function (n) {
  var started = NProgress.isStarted();
  n = clamp(n, Settings.minimum, 1);
  NProgress.status = n === 1 ? null : n;
  var progress = NProgress.render(!started),
      bar = progress.querySelector(Settings.barSelector),
      speed = Settings.speed,
      ease = Settings.easing; // progress.offsetWidth; /* Repaint */

  queue(function (next) {
    // Set positionUsing if it hasn't already been set
    if (Settings.positionUsing === '') Settings.positionUsing = NProgress.getPositioningCSS(); // Add transition

    css(bar, barPositionCSS(n, speed, ease));

    if (n === 1) {
      // Fade out
      css(progress, {
        transition: 'none',
        opacity: 1
      }); // progress.offsetWidth; /* Repaint */

      setTimeout(function () {
        css(progress, {
          transition: 'all ' + speed + 'ms linear',
          opacity: 0
        });
        setTimeout(function () {
          NProgress.remove();
          next();
        }, speed);
      }, speed);
    } else {
      setTimeout(next, speed);
    }
  });
  return this;
};

NProgress.isStarted = function () {
  return typeof NProgress.status === 'number';
};
/**
 * Shows the progress bar.
 * This is the same as setting the status to 0%, except that it doesn't go backwards.
 *
 *     NProgress.start();
 *
 */


NProgress.start = function () {
  if (!NProgress.status) NProgress.set(0);

  var work = function work() {
    setTimeout(function () {
      if (!NProgress.status) return;
      NProgress.trickle();
      work();
    }, Settings.trickleSpeed);
  };

  if (Settings.trickle) work();
  return this;
};
/**
 * Hides the progress bar.
 * This is the *sort of* the same as setting the status to 100%, with the
 * difference being `done()` makes some placebo effect of some realistic motion.
 *
 *     NProgress.done();
 *
 * If `true` is passed, it will show the progress bar even if its hidden.
 *
 *     NProgress.done(true);
 */


NProgress.done = function (force) {
  if (!force && !NProgress.status) return this;
  return NProgress.inc(0.3 + 0.5 * Math.random()).set(1);
};
/**
 * Increments by a random amount.
 */


NProgress.inc = function (amount) {
  var n = NProgress.status;

  if (!n) {
    return NProgress.start();
  } else if (n > 1) {
    return;
  } else {
    if (typeof amount !== 'number') {
      if (n >= 0 && n < 0.2) {
        amount = 0.1;
      } else if (n >= 0.2 && n < 0.5) {
        amount = 0.04;
      } else if (n >= 0.5 && n < 0.8) {
        amount = 0.02;
      } else if (n >= 0.8 && n < 0.99) {
        amount = 0.005;
      } else {
        amount = 0;
      }
    }

    n = clamp(n + amount, 0, 0.994);
    return NProgress.set(n);
  }
};

NProgress.trickle = function () {
  return NProgress.inc();
};
/**
 * Waits for all supplied jQuery promises and
 * increases the progress as the promises resolve.
 *
 * @param $promise jQUery Promise
 */
// (function() {
//   var initial = 0, current = 0;
//   NProgress.promise = function($promise) {
//     if (!$promise || $promise.state() === "resolved") {
//       return this;
//     }
//     if (current === 0) {
//       NProgress.start();
//     }
//     initial++;
//     current++;
//     $promise.always(function() {
//       current--;
//       if (current === 0) {
//           initial = 0;
//           NProgress.done();
//       } else {
//           NProgress.set((initial - current) / initial);
//       }
//     });
//     return this;
//   };
// })();

/**
 * (Internal) renders the progress bar markup based on the `template`
 * setting.
 */


NProgress.render = function (fromStart) {
  if (NProgress.isRendered()) return document.getElementById('nprogress');
  addClass(document.documentElement, 'nprogress-busy');
  var progress = document.createElement('div');
  progress.id = 'nprogress';
  progress.innerHTML = Settings.template;
  var bar = progress.querySelector(Settings.barSelector),
      perc = fromStart ? '-100' : toBarPerc(NProgress.status || 0),
      parent = document.querySelector(Settings.parent); // spinner;

  css(bar, {
    transition: 'all 0 linear',
    transform: 'translate3d(' + perc + '%,0,0)'
  }); // if (!Settings.showSpinner) {
  //   spinner = progress.querySelector(Settings.spinnerSelector);
  //   spinner && removeElement(spinner);
  // }

  if (parent !== document.body) {
    addClass(parent, 'nprogress-custom-parent');
  }

  parent.appendChild(progress);
  return progress;
};
/**
 * Removes the element. Opposite of render().
 */


NProgress.remove = function () {
  removeClass(document.documentElement, 'nprogress-busy');
  removeClass(document.querySelector(Settings.parent), 'nprogress-custom-parent');
  var progress = document.getElementById('nprogress');
  progress && removeElement(progress);
};
/**
 * Checks if the progress bar is rendered.
 */


NProgress.isRendered = function () {
  return !!document.getElementById('nprogress');
};
/**
 * Determine which positioning CSS rule to use.
 */


NProgress.getPositioningCSS = function () {
  // Sniff on document.body.style
  var bodyStyle = document.body.style; // Sniff prefixes

  var vendorPrefix = 'WebkitTransform' in bodyStyle ? 'Webkit' : 'MozTransform' in bodyStyle ? 'Moz' : 'msTransform' in bodyStyle ? 'ms' : 'OTransform' in bodyStyle ? 'O' : '';

  if (vendorPrefix + 'Perspective' in bodyStyle) {
    // Modern browsers with 3D support, e.g. Webkit, IE10
    return 'translate3d';
  } else if (vendorPrefix + 'Transform' in bodyStyle) {
    // Browsers without 3D support, e.g. IE9
    return 'translate';
  } else {
    // Browsers without translate() support, e.g. IE7-8
    return 'margin';
  }
};
/**
 * Helpers
 */


function clamp(n, min, max) {
  if (n < min) return min;
  if (n > max) return max;
  return n;
}
/**
 * (Internal) converts a percentage (`0..1`) to a bar translateX
 * percentage (`-100%..0%`).
 */


function toBarPerc(n) {
  return (-1 + n) * 100;
}
/**
 * (Internal) returns the correct CSS for changing the bar's
 * position given an n percentage, and speed and ease from Settings
 */


function barPositionCSS(n, speed, ease) {
  var barCSS;

  if (Settings.positionUsing === 'translate3d') {
    barCSS = {
      transform: 'translate3d(' + toBarPerc(n) + '%,0,0)'
    };
  } else if (Settings.positionUsing === 'translate') {
    barCSS = {
      transform: 'translate(' + toBarPerc(n) + '%,0)'
    };
  } else {
    barCSS = {
      'margin-left': toBarPerc(n) + '%'
    };
  }

  barCSS.transition = 'all ' + speed + 'ms ' + ease;
  return barCSS;
}
/**
 * (Internal) Queues a function to be executed.
 */


var queue = function () {
  var pending = [];

  function next() {
    var fn = pending.shift();

    if (fn) {
      fn(next);
    }
  }

  return function (fn) {
    pending.push(fn);
    if (pending.length === 1) next();
  };
}();
/**
 * (Internal) Applies css properties to an element, similar to the jQuery
 * css method.
 *
 * While this helper does assist with vendor prefixed property names, it
 * does not perform any manipulation of values prior to setting styles.
 */


var css = function () {
  var cssPrefixes = ['Webkit', 'O', 'Moz', 'ms'],
      cssProps = {};

  function camelCase(string) {
    return string.replace(/^-ms-/, 'ms-').replace(/-([\da-z])/gi, function (match, letter) {
      return letter.toUpperCase();
    });
  }

  function getVendorProp(name) {
    var style = document.body.style;
    if (name in style) return name;
    var i = cssPrefixes.length,
        capName = name.charAt(0).toUpperCase() + name.slice(1),
        vendorName;

    while (i--) {
      vendorName = cssPrefixes[i] + capName;
      if (vendorName in style) return vendorName;
    }

    return name;
  }

  function getStyleProp(name) {
    name = camelCase(name);
    return cssProps[name] || (cssProps[name] = getVendorProp(name));
  }

  function applyCss(element, prop, value) {
    prop = getStyleProp(prop);
    element.style[prop] = value;
  }

  return function (element, properties) {
    var args = arguments,
        prop,
        value;

    if (args.length === 2) {
      for (prop in properties) {
        value = properties[prop];
        if (value !== undefined && properties.hasOwnProperty(prop)) applyCss(element, prop, value);
      }
    } else {
      applyCss(element, args[1], args[2]);
    }
  };
}();
/**
 * (Internal) Determines if an element or space separated list of class names contains a class name.
 */


function hasClass(element, name) {
  var list = typeof element === 'string' ? element : classList(element);
  return list.indexOf(' ' + name + ' ') >= 0;
}
/**
 * (Internal) Adds a class to an element.
 */


function addClass(element, name) {
  var oldList = classList(element),
      newList = oldList + name;
  if (hasClass(oldList, name)) return; // Trim the opening space.

  element.className = newList.substring(1);
}
/**
 * (Internal) Removes a class from an element.
 */


function removeClass(element, name) {
  var oldList = classList(element),
      newList;
  if (!hasClass(element, name)) return; // Replace the class name.

  newList = oldList.replace(' ' + name + ' ', ' '); // Trim the opening and closing spaces.

  element.className = newList.substring(1, newList.length - 1);
}
/**
 * (Internal) Gets a space separated list of the class names on the element.
 * The list is wrapped with a single space on each end to facilitate finding
 * matches within the list.
 */


function classList(element) {
  return (' ' + (element && element.className || '') + ' ').replace(/\s+/gi, ' ');
}
/**
 * (Internal) Removes an element from the DOM.
 */


function removeElement(element) {
  element && element.parentNode && element.parentNode.removeChild(element);
}

export default NProgress;